Sep 01
How Face Shields and Valve Masks Fail to Stop Infectious Droplets, as Shown by Lasers
Posted in: Today's ChiliA new study using lasers suggests that face shields and masks outfitted with an exhaust valve aren’t particularly great at protecting others from tiny respiratory droplets containing contagious germs like the coronavirus that causes covid-19. These aerosols can spill through and around these types of face equipment,…
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